Matrix: DNVS/crplat2

Description: Matrix Representation of CRPLAT2, corrugated plate field

DNVS/crplat2 graph
(undirected graph drawing)


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  • Matrix group: DNVS
  • Click here for a description of the DNVS group.
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  • download as a MATLAB mat-file, file size: 233 KB. Use UFget(1259) or UFget('DNVS/crplat2') in MATLAB.
  • download in Matrix Market format, file size: 953 KB.
  • download in Rutherford/Boeing format, file size: 265 KB.

    Matrix properties
    number of rows18,010
    number of columns18,010
    structural full rank?yes
    structural rank18,010
    # of blocks from dmperm1
    # strongly connected comp.1
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetrysymmetric
    Cholesky candidate?yes
    positive definite?no

    authorC. Damhaug
    editorN. Gould, Y. Hu, J. Scott
    kindstructural problem
    2D/3D problem?yes

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD3,010,842
    Cholesky flop count1.0e+09
    nnz(L+U), no partial pivoting, with AMD6,003,674
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD8,812,674
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD17,396,166

    SVD-based statistics:
    null space dimension15,098
    full numerical rank?no
    singular value gap5.52151e+10

    singular values (MAT file):click here
    SVD method used:s = svd (full (A)) ;

    DNVS/crplat2 svd

    For a description of the statistics displayed above, click here.

    Maintained by Tim Davis, last updated 12-Mar-2014.
    Matrix pictures by cspy, a MATLAB function in the CSparse package.
    Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.